Vertically adjustable chair pedestal



April 10, 1956 w. J. BARGEN VERTICALLY ADJUSTABLE CHAIR PEDESTAL 3 Sheets-Sheet 1 Original Filed D60. 29, 1949 INVENTOR William Jfiaryen ATTORNEYS April 10, 1956 w. J. BARGEN VERTICALLY ADJUSTABLE CHAIR PEDESTAL ori ihal Filed Dec.

3 Sheets-Sheet 2 INVENTOR ATTORNEYS April 10, 1956 W. J. BARG EN VERTICALLY ADJUSTABLE CHAIR PEDESTAL 3 Sheets-Sheet 3 Original Filed Dec. 29, 1949 INVENTOR Willie. mJBa rye 71 BY ATTORNEYS Maw United States Patent 2,741,299 VER'IICALLY ADJUSTABLE PEDESTAL William James Bar-gen, Waukegan, Ill.

1 Claim. (Cl. 155 89) This invention relates to pedestals and is a division of my copending application Serial No. 134,721, filed December 29, 1949, for school desk, which issued on January 6, 1953, as Patent No. 2,624,392.

An object of this invention is to provide a pedestal for a school desk which is formed out of stamped sheet metal with the parts welded together so as to form a pedestal construction.

Another object of this invention is to provide a pedestal and base for school furniture, such as a desk or a chair, wherein the base is of hollow construction, and may be weighted or not according to the article of furniture with which the pedestal and base are used.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawings Figure l is a perspective view of a desk constructed according to an embodiment of this invention,

Figure 2 is a fragmentary sectional view taken on the line 22 of Figure 1,

Figure 3 is a fragmentary sectional view taken on the line 3--3 of Figure 2,

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure 2,

Figure 5 is a fragmentary vertical section taken on the line 5-5 of Figure 3,

Figure 6 is a fragmentary sectional view taken on the line 6-6 of Figure 2,

Figure 7 is a top plan view of the base and seat supporting standard,

Figure 8 is a fragmentary sectional view taken on the line 88 of Figure 6,

Figure 9 is a detail side elevation of the inner portion of the seat supporting standard,

Figure 10 is a top plan view of the standard shown in Figure 9.

Referring to the drawings, the numeral 25 designates generally a base member which is of hollow construction and is formed of a substantially inverted V-shaped top wall 26 formed with ribs 27. The base 25 is preferably stamped out of sheet metal of substantial thickness and the side portions of the base 25 are formed on a concave curvature as indicated at 28 and 29 respectively.

The side portions of the base 25 are downturned to provide downwardly extending flanges 30 and 31 respectively, to which a bottom plate 32 is adapted to be secured as by welding or other suitable fastening means. Preferably the plate 32 is welded solid to the base 25 in the areas outwardly from the dot and dash lines AA (Fig. 7) whereas plate 32 is tack Welded at spaced intervals to base 25 between the dot and dash lines AA so as to provide resiliency or springiness in the base. The plate 32 constitutes a weight means and may be of any desired thickness to provide the necessary balance We gh for the ba e 5, depending on the size of the seat and/ or desk which'is disposed above the base25. Bottom plate '32, as shown in :Figures 2 and 6, is upwardly dished tor ofiset:as indicatedat 96 to provide for distributionof the weight to the outerportions of plate 32 to assure a noticeableresiliencyin the base 25, and also to deaden noises when the desk-is moved about. The base 25 with the column 39 are formed out of relatively light weight'sheet metal,=whereas the balance plate 32 maybe formed out .of heavy sheet metal, thereby disposing a greater weight ,atthelowest point possible and providing a :balance for the seat .ordeskwhich is better than if the base is formed from cast metal.

T he base 25 is formed witheoncave opposite frontand rear portions 33 and 34, and the base 25 at the front and rear thereof is extended vertically downward, as indicated at 35 and 36. A rubber or resilient shoe 37 may be secured on the bottom plate 32 to the downwardly projecting buttons or gliders 38 by conventional means (not shown) at the corners of the base structure.

The base 25 has extending upwardly therefrom a tubular standard generally designated as 39. The standard 39 is of fabricated sheet metal construction and includes a lower tubular member 40 which is struck upwardly from the base 25 adjacent a side thereof and substantially at its apex. The tubular member 40 is polygonal in cross section, and an inner tubular member 41 is fixedly secured within the tubular member 49 and extends upwardly therewith.

The inner tubular member 41, as shown in Figures 9 and 10, is provided with a pair of wings 42, extending from the sides thereof, and is also provided with a for wardly projecting wing 43. A vertically disposed wing 44 also extends downwardly from the tubular member 4?. and the several wings 42 and 43 are disposed beneath the top wall 26 and are welded thereto. Vertical Wing 44 is disposed in face abutting relation to the rear wall 35, and is adapted to be spot welded or otherwise secured thereto. Wing 43 is disposed at the ridge or peak of the V-shaped top wall 26 and extends forwardly therebeneath, as shown in Figure 2. The rear wall 45 of the tubular member 41 is formed with inwardly offset and vertically spaced apart teeth 46, the purpose for which will be hereinafter described. An outer tubular member 47 is disposed about that portion of the inner tubular member 41 which projects upwardly from the tubular member 40 and is spot welded or otherwise firmly secured to the inner tubular member 41.

A seat structure generally designated as 48 is adjustably secured to the standard or upright 39 and includes depending tubular member 51. The tubular member 51 is formed with a vertically disposed slot 52 in one side thereof, and the lower end of the tubular member 51 is formed 'with teeth 53 which are engageable with selected ones of the teeth 46.

A T-shaped clamping member 55 is loosely disposed in the tubular member 51, having the stem or shank portion 56 thereof projecting through the slot 52. A pair of clamping bolts 57 are threaded into the clamping men ber 55 so that the tubular member 51 may be vertically adjusted. As shown in Figure 2, the tubular member 51 is substantially smaller than the distance between the front and rear walls of the standard 39 so that the tubular member 51 will be tilted a slight degree out of the vertical and secured in this position by means of a set screw 58. In order to vertically adjust the tubular member 51, clamp 55 is loosened and member 51 may then be raised or lowered, teeth 53 engaging with selected ones of the teeth 46 of standard 39.

What I claim is:

A pedestal for an article of furniture comprising a base plate of inverted V-shaped cross-section formed of 2 a'flexible metallic material and having indented arcuatelyshapecl sides said base having vertical portions at each of its said sides, a bottom plate securedto the corners I of said base plate and having the central portion thereof dished upwardly toward but in spaced relation relative to said base plate, said base plate having the corners thereof corresponding to the corners'of said bottom plate 7 and having downwardly projecting buttons secured thereto, a tubular column arising from said base plate adjaformed on the lower end thereof and fixedly secured to the lower side of said base plate, said inner tubular member having a plurality of veitically spaced inwardly struck teeth integrally formed on a wall thereofand an enter tubular member fixedly secured to and engaging about said inner tubular member.

References Cited in the file of this patent 1,611,708 masses 2,229,769 2,250,361

UNITED STATES PATENTS Kyle Feb. 23, Bobrick Dec. 19, Knape Feb. 19, Lancaster Apr. 14, Tacuone Aug., '21, Jones' Dec; 7; Amsden Dec. 21, Sellar Apr. 28, Raders Jan. 28, Cullinan July 22 Bargen ,Jan. 12,

Masterson Nov. 30,

FOREIGN PATENTS France r 1936 V 194i 1941 V 1943 

